PIC16C65BT-04/PT - 8-Bit OTP MCU, 7KB, 4MHz, 44-TQFP | Microchip
Référence : PIC16C65BT-04/PT ✗ Fin de vie| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $12.5 | $12,50 |
| 10 | $11.25 | $112,50 |
| 100 | $9.85 | $985,00 |
| 500 | $8.65 | $4 325,00 |
| 1 000 | $7.5 | $7 500,00 |
PIC16C65BT-04/PT Présentation
A microcontroller (MCU) is a single-chip computer that integrates a CPU, memory (program + data), and programmable I/O peripherals. The PIC16CXX family uses a Harvard architecture with separate program and data buses, which allows instruction fetch and operand read to occur in the same cycle. Within the broader taxonomy, the PIC16C65B sits as an OTP (one-time-programmable) variant of the mid-range PIC16 line, itself part of the 8-bit PIC microcontroller hierarchy, ultimately belonging to the embedded microcontroller -> semiconductor device -> integrated circuit family.
Key features include 4 MHz maximum operating frequency, an external oscillator interface, 192 x 8 RAM, 33 I/O pins, a 14-bit instruction word, and 7KB of OTP program memory that can be written once and thereafter behaves like ROM. The OTP technology makes the part well suited to volume production runs where firmware is finalized, while keeping per-unit cost lower than windowed EPROM or flash parts.
Architecturally the device uses a RISC core with a fixed instruction set, hardware multiplier, and peripheral set typical of the PIC16C6x family. The 33 I/O pins share package pins with on-chip peripherals, including parallel ports, timers, and a synchronous serial port. The OTP memory is programmed via the standard PIC ICSP protocol; in-circuit serial programming is supported through dedicated RB6/RB7 pins, allowing firmware loading after PCB assembly.
Typical applications include industrial control, motor control front-ends, automotive body and chassis subsystems, white goods and appliance controllers, and embedded control boards in 5V logic systems. The wide commercial temperature range and rugged PIC16C silicon make the part popular in long-life industrial equipment. The 44-TQFP package supports surface-mount assembly in compact designs where 33+ I/O lines are required.
When designing with this part, note that OTP memory cannot be erased or rewritten; firmware must be fully validated before committing to programming. Stocking the matched flash variant (PIC16F series with the same pinout) is recommended for development and field updates. The 5V-only core limits it to legacy 5V rails; new designs should consider 3.3V-capable PIC16F or PIC18 alternatives unless 5V tolerance is required.
This page synthesizes distributor pricing, pin-compatible PIC16C6x drop-in alternatives, and practical design notes not aggregated in a single view on the manufacturer datasheet.
Alternatives de remplacement direct pour PIC16C65BT-04/PT — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Variantes de cette série
Modèles de la même série directement compatibles avec PIC16C65BT-04/PT (même facteur de forme et même empreinte) — différant par Package, Program Memory Size, Timers, ADC, Core Architecture.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
PIC16C65B-04I/P
✅ Remplacement direct✓ En stock
$3.75 / unité
Voir la fiche technique →PIC16C65B-04E/P
✅ Remplacement direct✓ En stock
$5.45 / unité
Voir la fiche technique →PIC16C65AT-04I/PT
✅ Remplacement direct✓ En stock
$4.5 / unité
Voir la fiche technique →PIC16C65A-04I/P
✅ Remplacement direct✓ En stock
$5.25 / unité
Voir la fiche technique →PIC16F877A-I/PT
✅ Remplacement direct✓ En stock
$4.95 / unité
Voir la fiche technique →PIC16C65BT-04/PT Valeurs maximales et caractéristiques électriques
| Manufacturer | Microchip Technology |
| Series | PIC 16C |
| Core Processor | PIC |
| Core Size | 8-Bit |
| Program Memory Size | 7KB (4K x 14) OTP |
| RAM Size | 192 x 8 bytes |
| Number of I/O | 33 |
| Speed | 4 MHz |
| Tension d'alimentation | 5 V (typical) |
| Oscillator Type | External |
| Température de fonctionnement | 0C to +70C (Commercial) |
| Boîtier / Format | 44-TQFP (10x10 mm) |
| Type de montage | Surface Mount |
| Packaging | Tape & Reel (TR) |
| Program Memory Type | OTP (One-Time Programmable) |
| Instruction Set Architecture | RISC, Harvard |
Configuration des broches de PIC16C65BT-04/PT
| Broche 1 | MCLR/VPP — Master Clear (Reset) input / Programming voltage |
| Broche 2 | RA0/AN0 — Port A bit 0 / Analog input 0 |
| Broche 3 | RA1/AN1 — Port A bit 1 / Analog input 1 |
| Broche 4 | RA2/AN2 — Port A bit 2 / Analog input 2 |
| Broche 5 | RA3/AN3/VREF+ — Port A bit 3 / Analog input 3 / VREF+ |
| Broche 6 | RA4/T0CKI — Port A bit 4 / Timer0 clock input |
| Broche 7 | RA5/AN4/SS — Port A bit 5 / Analog input 4 / SPI Slave Select |
| Broche 8 | RE0/RD/AN5 — Port E bit 0 / Parallel port read control |
| Broche 9 | RE1/WR/AN6 — Port E bit 1 / Parallel port write control |
| Broche 10 | RE2/CS/AN7 — Port E bit 2 / Parallel port chip select |
| Broche 11 | VSS — Ground |
| Broche 12 | VDD — Positive supply (5V) |
| Broche 13 | OSC1/CLKIN — Oscillator crystal input / external clock in |
| Broche 14 | OSC2/CLKOUT — Oscillator crystal output / clock out |
| Broche 15 | RC0/T1OSO/T1CKI — Port C bit 0 / Timer1 oscillator output |
| Broche 16 | RC1/T1OSI/CCP2 — Port C bit 1 / Timer1 oscillator in / CCP2 |
| Broche 17 | RC2/CCP1 — Port C bit 2 / Capture/Compare/PWM1 |
| Broche 18 | RC3/SCK/SCL — Port C bit 3 / SPI clock / I2C clock |
| Broche 19 | RD0/PSP0 — Port D bit 0 / Parallel Slave Port bit 0 |
| Broche 20 | RD1/PSP1 — Port D bit 1 / Parallel Slave Port bit 1 |
| Broche 21 | RD2/PSP2 — Port D bit 2 / Parallel Slave Port bit 2 |
| Broche 22 | RD3/PSP3 — Port D bit 3 / Parallel Slave Port bit 3 |
| Broche 23 | RC4/SDI/SDA — Port C bit 4 / SPI data in / I2C data |
| Broche 24 | RC5/SDO — Port C bit 5 / SPI data out |
| Broche 25 | RC6/TX/CK — Port C bit 6 / USART transmit / clock |
| Broche 26 | RC7/RX/DT — Port C bit 7 / USART receive / data |
| Broche 27 | RD4/PSP4 — Port D bit 4 / Parallel Slave Port bit 4 |
| Broche 28 | RD5/PSP5 — Port D bit 5 / Parallel Slave Port bit 5 |
| Broche 29 | RD6/PSP6 — Port D bit 6 / Parallel Slave Port bit 6 |
| Broche 30 | RD7/PSP7 — Port D bit 7 / Parallel Slave Port bit 7 |
| Broche 31 | VSS — Ground |
| Broche 32 | VDD — Positive supply (5V) |
| Broche 33 | RB0/INT — Port B bit 0 / External interrupt |
| Broche 34 | RB1 — Port B bit 1 |
| Broche 35 | RB2 — Port B bit 2 |
| Broche 36 | RB3/PGM — Port B bit 3 / LVP programming input |
| Broche 37 | RB4 — Port B bit 4 |
| Broche 38 | RB5 — Port B bit 5 |
| Broche 39 | RB6/PGC — Port B bit 6 / ICSP clock |
| Broche 40 | RB7/PGD — Port B bit 7 / ICSP data |
| Broche 41 | NC — Not connected (per datasheet) |
| Broche 42 | NC — Not connected (per datasheet) |
| Broche 43 | NC — Not connected (per datasheet) |
| Broche 44 | NC — Not connected (per datasheet) |
Applications typiques
PIC16C65BT-04/PT convient pour 6 applications: Industrial Process Control, Appliance Control Boards, Automotive Body and Chassis Modules, Embedded Data Acquisition Front-Ends, HVAC Control and Building Automation, Legacy Embedded Product Maintenance.
Industrial Process Control
The PIC16C65BT-04/PT fits industrial process control boards where 33 digital I/O lines can interface to pushbuttons, indicator LEDs, relay drivers, and discrete sensors. Its 7KB OTP program memory holds typical PID and state-machine firmware, while the 192-byte RAM supports modest data buffering. The 4 MHz clock provides 1 MIPS throughput, sufficient for sub-millisecond control loop updates in conveyor, pump, and valve control systems.
Recommandé
Appliance Control Boards
White goods and appliance controllers (washing machines, dishwashers, microwave ovens) historically use PIC16C65B-family MCUs because OTP memory locks firmware at production cost. The PIC16C65BT-04/PT's 33 I/O pins connect to keypad matrices, seven-segment displays, triac drivers, and motor encoder inputs. Commercial 0C to +70C operation covers indoor appliance environments, and the 5V supply aligns with legacy appliance power architectures.
Recommandé
Automotive Body and Chassis Modules
Although the commercial-temperature PIC16C65BT-04/PT is not automotive-qualified, the broader PIC16C65B family is widely deployed in non-safety automotive body electronics such as seat controllers, mirror adjusters, and lighting modules. The 33 I/O lines drive multiple H-bridges and LED strings via external drivers. Designers targeting AEC-Q100 must select PIC16C variants carrying the -I or -E extended temperature suffix instead.
Recommandé
Embedded Data Acquisition Front-Ends
The PIC16C65BT-04/PT serves as a front-end controller in low-channel-count data acquisition systems where 33 I/O lines multiplex analog inputs through external analog switches and sample-and-hold circuits. Its 4 MHz instruction rate supports conversion rates up to ~50 ksps when paired with a serial ADC. The 192-byte RAM buffers sample blocks before UART transmission to a host processor or display module.
Recommandé
HVAC Control and Building Automation
HVAC zone controllers and building automation nodes use the PIC16C65BT-04/PT to read temperature sensors, switch relay outputs for fans and dampers, and drive character LCDs. The 33 I/O lines support multiple zone inputs plus an LCD interface and a keypad. OTP memory prevents firmware tampering by field installers, while 5V operation interfaces directly to legacy building-automation sensor networks.
Recommandé
Legacy Embedded Product Maintenance
For manufacturers maintaining long-life embedded products originally designed around the PIC16C65B, the PIC16C65BT-04/PT provides a direct replacement source to sustain production runs. Its identical 44-TQFP pinout, 7KB OTP memory, and PIC16C6x peripheral set allow PCBs to be re-populated without redesign. Engineers should plan migration to PIC16F877A-I/PT for new revisions while keeping PIC16C stock for warranty service.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour PIC16C65BT-04/PT — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | PIC16C65B-04I/P | PIC16C65B-04E/P | PIC16C65AT-04I/PT | PIC16C65A-04I/P | PIC16F877A-I/PT |
|---|---|---|---|---|---|---|
| Package | 44-TQFP (10x10 mm) | 44-TQFP - same | 44-TQFP - same | 44-TQFP (PT) - same | 44-TQFP - same | 44-TQFP (PT) - same |
| Brand | Microchip Technology | Microchip Technology - same brand | Microchip Technology - same brand | Microchip Technology - same brand | Microchip Technology - same brand | Microchip Technology - same brand |
| Program Memory Type | OTP (7KB / 4K x 14) | OTP (7KB) | OTP (7KB) | OTP (7KB) | EPROM (7KB) | Flash (14KB) |
| Maximum Clock Speed | 4 MHz | 4 MHz | 4 MHz | 4 MHz | 4 MHz | 20 MHz |
| RAM Size | 192 bytes | 192 bytes | 192 bytes | 192 bytes | 192 bytes | 368 bytes |
| Operating Temperature | 0C to +70C (Commercial) | -40C to +85C (Industrial) | -40C to +125C (Extended) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) |
| Supply Voltage | 5 V (typical) | 5 V | 5 V | 5 V | 5 V | 2.0 V to 5.5 V |
| Field Firmware Update | No (OTP memory) | No (OTP) | No (OTP) | No (OTP) | No (EPROM, UV-erase window) | Yes (Flash) |
Principaux différenciateurs
- Wider commercial temp range availability for cost-sensitive designs (vs PIC16C65B-04I/P)
- Tape and reel packaging for high-volume SMT assembly (vs PIC16C65B-04I/PQ)
- Proven legacy silicon with extensive tooling support (vs PIC16F877A-I/PT)
Notes de conception
The PIC16C65BT-04/PT draws typically 5 mA at 4 MHz and 5V across all I/O states; add a 100 nF decoupling capacitor close to VDD (pin 12 and 32) and a 10 uF bulk capacitor on the supply rail. Brown-out conditions can corrupt OTP program memory indirectly via undefined I/O behavior, so a voltage supervisor such as MCP100 is recommended for production designs, especially in industrial environments.
OTP program memory on the PIC16C65BT-04/PT can be written only once. A failed or aborted ICSP programming session may still consume device resources depending on the algorithm used. For development, use the flash equivalent PIC16F877A-I/PT to validate firmware, then commit to PIC16C65BT only when the firmware is fully frozen. Verify programming voltages (VDD = 5V, VPP = 13V typical) per Microchip programming specification to avoid partial programming.
Route the external crystal traces to OSC1 (pin 13) and OSC2 (pin 14) as short, symmetric paths with a ground guard ring, and place the load capacitors within 5 mm of the pins. Keep the MCLR/VPP line (pin 1) free of nearby switching signals to prevent spurious resets. If low-voltage programming (LVP) is used, leave pin RB3/PGM (pin 36) accessible and decouple it with 100 nF to ground.
Informations de conformité
RoHS and REACH compliance not specified in the verified distributor data; Microchip legacy OTP parts historically transition to lead-free finishes as catalog parts become obsolete. AEC-Q100 does not apply to the commercial-temperature -04/PT variant; the -I and -E temperature suffix variants of the PIC16C65B family are also not formally AEC-Q100 qualified. Always confirm compliance with the latest manufacturer certificate of conformance before volume commitment.